.word_box {
    position: relative;
    top: 150px;
}
.word_box article {
    overflow: hidden;
    margin-left: 10%;
    margin-top: 30px;
    width: 80%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: arAni2 1s ease 0s forwards;
}
@keyframes arAni2 {
    0%{
        background-color: rgba(0, 0, 0, 0);
        margin-top: 0px;
    }
    100%{
        background-color: rgba(0, 0, 0, 0.5);
        margin-top: 30px;
    }
}
.word_box article .context {
    margin: 20px 30px;
    width: 95%;
    text-indent: 2em;
    font-size: 1.6rem;
    color: #fff;
    border-bottom: 1px solid rgb(117, 117, 117);
}
.word_box article .date {
    margin: 10px 0px 10px 20px;
    font-size: 1.3rem;
    color: rgb(192, 192, 192);
}
.null2 {
    height: 100px;
}

.input_wrap {
    position: fixed;
    bottom: 0px;
    width: 100%;
}
.input_wrap .input {
    padding: 5px 10px;
    width: 100%;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    background-color: rgba(0, 0, 0, 0.5);
}
.input_wrap .input span {
    display: block;
    margin-bottom: 10px;
    font-size: 1.4rem;
    color: #fff;
}
.input_wrap .input span:nth-child(1) {
    float: left;
}
/* .input_wrap .input span:nth-child(2) {
    float: right;
    cursor: pointer;
    color: rgb(168, 168, 168);
}
.input_wrap .input span:nth-child(2):hover {
    text-shadow: 0px 0px 10px #fff;
    color: #fff;
} */
#go {
    display: block;
    position: fixed;
    bottom: 0px;
    left: 87%;
    margin-left: 9px;
    width: 40px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    background-color: rgba(0, 0, 0, 0.7);
    color: rgb(168, 168, 168);
    cursor: pointer;
}
#go:hover {
    text-shadow: 0px 0px 10px #fff;
    color: #fff;
}
.input_wrap .input #word {
    width: 100%;
    height: 36.5px;
    outline: none;
    resize: none;
    font-size: 1.5rem;
    background-color: rgb(190, 190, 190);
    transition: height 1s ease 0s, background-color 1s ease 0s;
}
.input_wrap .input #word:focus {
    height: 200px;
    background-color: rgb(255, 255, 255);
    transition: all 1s ease 0s;
}